Based on the erotic game by CHAOS-R. 
 
The curtain rises on that tragedy once again at Etoile Private Academy. In the newspaper club room, Runa, Reina, and Miyu launch the rumored app Angel Maker. 
"Would you like a blow-up? Yes/No" ...That was the beginning of the third act of the tragedy. 
The girls transform into magical girls Dacryuon and fight against the monsters, but one day they are surrounded by a large number of monsters. The three try to break through, but are restrained by tentacles, crawl all over their bodies, and are raped. 
Suddenly, magical girl Erika appears and helps them, and they somehow escape. 
The three are told that if they transform into Dacryuon and fight, they will become targets of monsters. The Angel Maker has been cursed by a fallen angel. 
Erika fights against an army led by a fierce fallen angel, but her spirit is broken... 
 
(Source: Mediabank, translated)

Short special included in the DVD-BOX of Rape! Rape! Rape!. Features two scenes based off the eroge "Play! Play! Play!" by Valkyria.

Based on the erotic game by POISON. 
 
The tutors of the main character, Masato, are "the sexually vicious sisters" he had known since childhood! Haruna Shinjo, the celebrity older sister, combines brains, a fine pair of eyebrows, and the worst kind of personality. Serina Shinjo, a college student with a selfish personality and body, is full of gaps. He is constantly mistreated by both of them, and is already fed up with his life. Then one day, Masato meets Sakiko Ichinose, the owner of the secret club "Gentildonna" and is handed a hypnosis device. Using the device, he is told that he can manipulate any person's mind and body at will. 
 
(Source: Mediabank, translated)

Based on the erotic doujin game by NoFuture.

Based on the erotic game by Liquid. 
 
The Azuma family is a feminine family and their eldest daughter, Haruka, is the headmistress of St. Orchis Academy, while their second daughter Suzuna is the student council president and their youngest daughters, the twins Himari and Komari, are enrolled in the school. Originally an all-girls school, the few male students at this school were unfairly discriminated against. Cornered by the family's oppressive rule, the male students rose up and humiliated and raped Himari and Komari one after another. This leads Kei Kuga to trap the headmaster, Haruka, and take full control of the school. The boys resentment is directed at the Azuma sisters and they are exposed to the vomit of lust.

Based on the erotic game by Pin-Point. 
 
The long-running war between superpowers ended with the victory of the Dominus Empire. The princess Elise, who led to the destruction of the Kingdom of Elstein, was called the worst lewd woman, as her moans echoed throughout Elstein. 
 
The sex slave Elise existed as a symbol of the Probasanda of the Dominus Empire, but it disappeared one day ... All the men of Elstein were purged, and the women became sex slaves. A sexual law was put into place that does not allow women to refuse the advances of orcs and soldiers at any time, and if they do, they will be purged on the spot. The kingdom has entered a dark age ... 
 
Anna, a female knight, leads a resistance unit, but was captured by Baldur. But there was a secret in the eyepatch covering her right eye ...

Based on the erotic game by Pin-Point. 
 
The Kingdom of Elstein... A flourishing land with a history spanning over 1000 years. This grand nation rules over half of the continent. Noble born first princess to the Elstein royalty, Elize, loves her subjects and likewise, in return, is loved back. With Anna, her guardian knightess and childhood friend the two were living happy peaceful lives... 
 
However, Elize had a niggling worry at the back of her head. That was, that there was a discrepancy between the Elize which her citizens desired and Elize's TRUE inner self. You see, on the inside, Elize is a timid, mentally fragile girl, with a over active, anxiety inducing sense of self consciousness. 
 
This gap... between ideal and reality, naturally causes her stress and slowly but surely, the desire to show her inner self grows stronger... 
 
At first, she was satisfied with just walking around naked. But she craves for more thrill, more stimulation, more pleasure... 
 
Her desire for exhibitionist pleasures know no bounds and stirring up a storm of depravity, her best friend and the kingdom itself, is drawn into a whirlpool of salacious self destruction... 
 
A vulgar and exhibitionist themed story featuring a once pure princess, her proud knightess and unlimited levels of corruptive lewdity in a medieval fantasy setting! 
 
(Source: DLsite English)

Based on the erotic game by Pin-Point. 
 
Omega is an anti-humanity institution purposed to dominate the whole world. With artificial humans created by an unequaled scientist, Void, they have destroyed cities and hunted people. 
The police and military forces were no match against Omega's artificial humans and innocent people have barely survived through their attacks. 
By the name of Yisphere, Shizuku Ayazaki and Natsumi Fujii acquired the power to repel Omega's forces and are fighting for the peace. 
Wearing special battle wears which convert their righteous spirits into physical forces, they bring down to Omega's artificial humans. 
As Void takes them as a thorn in the side of his scheme, he formulates and implements a project to eliminate them from the situation. 
Supposing their justice minds are the very source of their power, his project aims to bend and reprogram their minds into those of sex slaves. 
By the plan is his own technology...brainwashing hypnotism. 
Yisphere's determined beliefs will be overwritten by a course of brainwashing hypnotism and enslaving disciplines and they will go in the wrong direction, which leads to a bottomless hell of sexual pleasure...! 
 
(Source: DLsite English)

Based on the erotic game by Guilty. 
 
A cruise with only guests invited by a famous company and staff allowed on. This cruise, the Northern Light, is celebrating it's 200th voyage, with Fujigasaki Miho's father as the captain. 
 
Miho is invited by her best friend, Moribe Jun, to work there part time. 
 
Otowa Saki, a student working at the cruise's restaurant, playing the violin. Kurusu Nonoka, an idol holding a handshake event on the main deck. Fujigasaki Miho and Moribe Jun, who are working at the casino as waiteresses. And Mizunashi Nadia, a dealer at the casino. 
 
We'll have lots of fun, and it'll be a great memory of how we spent our summer vacation... That's what Miho thought, before she realized the nightmare that was waiting for them. 
 
(Source: hanime.tv)

Based on the erotic game by onomatope*Raspberry. 
 
The Amami family, Hassaku, his older sister Mao and younger sister Airi. Their parents founded a school to foster love between the students but they passed away in an accident. Now their aunt Mei has taken possession of the school and forced Mao away so nobody could challenger her position. Mei's plan is to turn the school into a Mecha-con school where girls are trained to be sold as the perfect brides for wealthy men. To do that she needs to convert the school into an all girl's school. 
 
Unfortunately for Mei the school charter demands the school be co-ed so she has the girls under her control force the boys out through bullying. Now the only male student left is Hassaku. Mei's daughter and their cousin Arisu pulls Hassaku's pants and underwear down in front of all the girls in his class to humiliate him but his penis is huge! Also at that moment he's rescued by his sister Mao who's returned home after many months. Mao declares to her aunt Mei and cousin Arisu that she will protect her brother and return the school to the school for fostering love their parents believed in. 
 
Now it's a battle between their aunt Mei who wishes to control the school and rid it of the last male student and the Amami siblings who wish to restore it to their parents dream. Mei tries to use sex to blackmail and humiliate Hassaku but if Hassaku can convince the girls to love him he can create a Mecha-con of his own and bring romance back to the school. 
 
(Source: Visual Novel Database)

Based on the erotic game by Moonstone Cherry. 
 
With their parents departing on a business trip, Yuuichi was left alone with his five imoutos for the entire summer vacation. He wanted to take advantage of this opportunity to be closer to his imoutos, and they were also strangely assertive, leading to ecchi incidents one after another. Just how far will the Nanase siblings go? 
 
(Source: Hau~ Omochikaeri!)

Based on the erotic game by Mink. 
 
Alternative Story: A former science teacher receives a mysterious recruitment document, inviting him to a prestigious school. However, this school is not what it seems... 
 
Details Story: Teacher Ryuudouji Shimon is known as a teacher who trains people into sex slaves. On the orders of his old friend Sayaka, Mr. Ryuudouji was asked to conquer many women in school into his sex slaves. For the sake of pleasure and harem of torture, Ryuudouji is very happy to do so, especially Sayaka promises rewards to him. 
 
(Source: Nekopoi and Has Been Translated)

Based on the erotic game by Liquid. 
 
Clause plans to reclaim his kingdom, which was once captured by the Angkatatan family from Leiye. Pretending to be Leiye-sama's companion and subordinate thus makes scenarios and dramas very good and finally Princess Leiye is framed by Clause for the purpose of revenge for the event 300 years ago. Rape all Leiye families and also want to destroy the Navy state that's the purpose of Clause. 
 
(Source: Nekopoi and Has Been Translated)

Based on the adult game by Silky's. 
 
A man was sent to convince four beautiful young heirs to release all of their father's fate claims. Use sexual prowess to win them over and accomplish hidden agenda. 
 
(Source: Translated from Nekopoi)

Based on the adult game by Clam Chowder.
 
Shizume, a kunoichi of the Fuuma clan, fails in her first attempt to retrieve an important scroll from Horimon Juurou and gets disciplined by her father and brother. Will her next attempt succeed or will Horimon prove to be too much for her? Meanwhile, Horimon is also being pursued by Kojuurouta, wanting revenge for him apparently killing her father and stealing the scroll. Will she be resistent to his charms?

OVA based off of the adult PC game by G.J?

Based on the erotic game by Pin-Point. 
 
Arata Asaoka lives with his despicable, chauvinist father and older brother. Arata is an illegitimate child so he has always been treated as such. One day he met a girl who gave him hope. Being with her made Arata feel good, and he fell in love. He began to believe that his life could be better. However, his father and brother have other plans.

In 20XX, the humans are about to go extinct... 
Since the ratio of men and women is now 1:10721, the authorities establish a new law, "Sex New Law", and issue a card called "Free Sex Licence". Once a man shows his card to a girl, he will be able to have sex with her soon. However, it doesn't work... 
The authorities decide to issue a new license to break the deadlock... 
(Source: ErogeShop)

With the help from a mysterious creature, Elena turned herself into a magical girl to beat Zoid, a tentacle monster to save her sister, Emile. 
Since that day, to protect her sister and to keep peace on the earth, Elena started to fight against the ugly creatures as a magical girl! 
However, what awaited her is a harsh destiny: immoral days of naughty humiliations. And her battle eventually involves her sister and her dead mother. 
Can Elena exterminate the tentacle monster, or is she driven crazy and lost her reason by the ecstasy? 
(Source: DLsite)

Based on the erotic game by Moonstone Cherry. 
 
It’s summer vacation and your parents are heading overseas for work, leaving you with your 5 little sisters: typical lovestruck imouto Aya, modern tsundere Rio, timid and shy Hiyori, lively and perverted Koharu, and the bookworm Michika who's a lovable Sadist. With no distractions and ecchi happenings one after the other, how far will you go with them? 
 
(Source: Hau~ Omochikaeri!)

The vampire. A legendary creature that lives in the shadows and preys on humanity. 
Onohara Mikage is an unfortunate girl who sold herself to a clan of vampires to pay off her parents' debt. What has the clan head, Claude, prepared for her? Will she be able to pay herself off and obtain her freedom?

An exclusive scene included in the DVD Box of Soukou Kijo Iris.

Anime Antenna Iinkai